Agar, David

Das, Atanu Kumar

Favén, Leena

Hed, Leif

Kilpeläinen, Petri

Rudolfsson, Magnus

Tienaho, Jenni

English

Epsilon Open Archive

 This PowerPoint presentation was presented at the TAPPI, International Bioenergy & Bioproducts Conference (IBBC), October 30 to November 2, 2022, Providence, Rhode Island, USA This publication is openly available through SLU publication database, https://res.slu.se/id/publ/119468. Bioderived Chemical Extraction from Spruce Needles – Adding Value to Forest Logging ResiduesAtanu Kumar DasSwedish University of Agricultural SciencesDepartment of Forest Biomaterials and Technology, Swedenatanu.kumar.das@slu.seBiomass Technology Centre (BTC)Fig. 1: Location and activities at BTC, Swedish University of Agricultural Sciences (Umeå campus)Background of the Study Biochemicals are the part of the circular bioeconomy Biochemical from spruce needles can add value to the forest resource Spruce needles are strongly attached to green branches There is a need of good separation method A novel multi-blade shaft mill (MBSM) may take this challengeMulti-blade shaft mill (MBSM)Prototype of MBSM mill (a)The principle of operation (b)The multi-blade shaft (c)Particle size ∝ A × (FS) + B × (BS);FS = Feeding speed and BS =Blade speedFig. 2: An overview of MBSM (Das et al. (2021). https://doi.org/10.1016/j.powtec.2020.10.026).Materials and MethodsFig. 3: Fresh spruce branches. Logging residues Spruce (Picea abies)branchesMaterials and Methods (Continued……….) Fig. 4: Feeding of fresh spruce branches.Mill settingTarget settings of BS and FS Materials and Methods (Continued……….) Fig. 5: Sieving for separating needle; Sieving machine (a) and Sieve (b, c)abc Sieve setting Target sieveMaterials and Methods (Continued……….)  Extraction Acetone/water Green solvent Analysis Chemical characterization Antioxidant AntibacterialResults and Discussion  Fig. 6: Optimum separation condition.Too fine milledToo coarsely milledOK!Results and Discussion (Continued……….) Resiving Recoveredpure needles1st  sievingResievingFig. 7: Observation of fractionated pure needles.Results and Discussion (Continued……….) ParameterUnsievedmaterialFractionation (%)Total(%)Loss (%)Fraction1Fraction2Fraction3Fraction4Fraction5Fraction6100 3.0 5.5 43.0 7.3 7.3 31.3 97.4 2.6Std 0 0.4 0.6 3.1 0.5 0.4 3.5 1.7 1.7MC (%) 30.5 36.5 35.9 39.3 34.5 30.0 26.5 - -*Std = Standard deviation, and MC = Moisture contentTable 1: The fractionated samples and moisture contentResults and Discussion (Continued……….) Fig. 8: Total phenolic content (TPC) of fractonated samples.It had antibacterial andantioxidant propertiesConclusionsSpruce branches contains around 37% needles*This technique separated 43% green needlesTPC was higher in fraction containing needlesThis result suports the efficiency of MBSMExtracted material showed the antioxidant and antibacterial properties*Lestander et al. (2022). https://doi.org/10.1016/j.jclepro.2022.133330Acknowledgements David A. Agar (Swedish University of Agricultural Sciences)Leena Favén (Centria University of Applied Sciences)Leif Hed (Centria University of Applied Sciences)Petri Kilpeläinen (Natural Resources Institute Finland)Jenni Tienaho (Natural Resources Institute Finland)Magnus Rudolfsson (Swedish University of Agricultural Sciences)

Bioderived Chemical Extraction from Spruce Needles – Adding Value to Forest Logging Residues

https://pub.epsilon.slu.se/30540/1/das-a-k-20230330.pdf

Bioderived Chemical Extraction from Spruce Needles – Adding Value to Forest Logging Residues

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